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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 17 May, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/05/17/0400
Analysis Summary
----------------
BGP routing table entries examined: 220344
Prefixes after maximum aggregation: 116962
Deaggregation factor: 1.88
Unique aggregates announced to Internet: 105907
Total ASes present in the Internet Routing Table: 25197
Prefixes per ASN: 8.74
Origin-only ASes present in the Internet Routing Table: 21952
Origin ASes announcing only one prefix: 10619
Transit ASes present in the Internet Routing Table: 3245
Transit-only ASes present in the Internet Routing Table: 75
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 25
Max AS path prepend of ASN (16327) 21
Prefixes from unregistered ASNs in the Routing Table: 6
Unregistered ASNs in the Routing Table: 7
Prefixes from 32-bit ASNs in the Routing Table: 6
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1718423744
Equivalent to 102 /8s, 109 /16s and 16 /24s
Percentage of available address space announced: 46.4
Percentage of allocated address space announced: 61.4
Percentage of available address space allocated: 75.5
Total number of prefixes smaller than registry allocations: 115383
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 50693
Total APNIC prefixes after maximum aggregation: 19886
APNIC Deaggregation factor: 2.55
Prefixes being announced from the APNIC address blocks: 47707
Unique aggregates announced from the APNIC address blocks: 20157
APNIC Region origin ASes present in the Internet Routing Table: 2941
APNIC Prefixes per ASN: 16.22
APNIC Region origin ASes announcing only one prefix: 788
APNIC Region transit ASes present in the Internet Routing Table: 441
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 292971968
Equivalent to 17 /8s, 118 /16s and 101 /24s
Percentage of available APNIC address space announced: 72.6
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 116/6, 120/6, 124/7, 126/8, 202/7
210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 106420
Total ARIN prefixes after maximum aggregation: 62099
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 78479
Unique aggregates announced from the ARIN address blocks: 30658
ARIN Region origin ASes present in the Internet Routing Table: 11573
ARIN Prefixes per ASN: 6.78
ARIN Region origin ASes announcing only one prefix: 4435
ARIN Region transit ASes present in the Internet Routing Table: 1045
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 332433536
Equivalent to 19 /8s, 208 /16s and 136 /24s
Percentage of available ARIN address space announced: 73.4
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959
ARIN Address Blocks 24/8, 63/8, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 45499
Total RIPE prefixes after maximum aggregation: 29823
RIPE Deaggregation factor: 1.53
Prefixes being announced from the RIPE address blocks: 42023
Unique aggregates announced from the RIPE address blocks: 28138
RIPE Region origin ASes present in the Internet Routing Table: 9628
RIPE Prefixes per ASN: 4.36
RIPE Region origin ASes announcing only one prefix: 5083
RIPE Region transit ASes present in the Internet Routing Table: 1547
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 306140800
Equivalent to 18 /8s, 63 /16s and 86 /24s
Percentage of available RIPE address space announced: 76.0
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-44031
RIPE Address Blocks 62/8, 77/8, 78/7, 80/5, 88/6, 92/7, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 15138
Total LACNIC prefixes after maximum aggregation: 4141
LACNIC Deaggregation factor: 3.66
Prefixes being announced from the LACNIC address blocks: 13231
Unique aggregates announced from the LACNIC address blocks: 7217
LACNIC Region origin ASes present in the Internet Routing Table: 791
LACNIC Prefixes per ASN: 16.73
LACNIC Region origin ASes announcing only one prefix: 258
LACNIC Region transit ASes present in the Internet Routing Table: 142
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 38864640
Equivalent to 2 /8s, 81 /16s and 7 /24s
Percentage of available LACNIC address space announced: 57.9
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 2583
Total AfriNIC prefixes after maximum aggregation: 1001
AfriNIC Deaggregation factor: 2.58
Prefixes being announced from the AfriNIC address blocks: 1951
Unique aggregates announced from the AfriNIC address blocks: 1171
AfriNIC Region origin ASes present in the Internet Routing Table: 188
AfriNIC Prefixes per ASN: 10.38
AfriNIC Region origin ASes announcing only one prefix: 55
AfriNIC Region transit ASes present in the Internet Routing Table: 37
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 6035200
Equivalent to 0 /8s, 92 /16s and 23 /24s
Percentage of available AfriNIC address space announced: 18.0
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 1281 9601 275 CHINANET-BACKBONE
4755 1214 383 72 Videsh Sanchar Nigam Ltd. Aut
9583 1033 109 16 Sify Limited
9498 980 469 72 BHARTI BT INTERNET LTD.
4766 783 4943 312 Korea Telecom (KIX)
23577 778 35 707 Korea Telecom (ATM-MPLS)
17488 676 44 35 Hathway IP Over Cable Interne
7545 628 142 80 TPG Internet Pty Ltd
1221 548 1954 423 Telstra Pty Ltd
18101 535 116 32 Reliance Infocom Ltd Internet
4668 508 68 10 LG-EDS Systems Inc.
17676 504 10935 65 Softbank BB Corp.
4812 460 807 76 China Telecom (Shanghai)
9443 452 115 74 Primus Telecommunications
7474 414 218 270 SingTel Optus Pty Ltd
9829 362 258 14 BSNL National Internet Backbo
4802 360 86 148 Wantree Development
17557 355 37 168 Pakistan Telecom
17974 348 129 12 PT TELEKOMUNIKASI INDONESIA
4837 343 4693 158 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1502 6148 993 AT&T WorldNet Services
4323 1263 1027 361 Time Warner Telecom
2386 1135 580 751 AT&T Data Communications Serv
6478 1097 340 132 AT&T Worldnet Services
11492 1051 104 23 Cable One
6197 1036 688 503 BellSouth Network Solutions,
18566 1006 288 9 Covad Communications
174 964 6792 872 Cogent Communications
701 958 6660 731 UUNET Technologies, Inc.
20115 818 742 431 Charter Communications
1239 815 2715 576 Sprint
7011 792 226 473 Citizens Utilities
19262 773 2645 207 Verizon Global Networks
209 729 3847 583 Qwest
22773 713 1888 43 Cox Communications, Inc.
5668 600 160 17 CenturyTel Internet Holdings,
721 596 21755 271 DLA Systems Automation Center
852 589 1096 370 Telus Advanced Communications
7029 587 456 79 Alltel Information Services,
7385 576 164 450 Linkport Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 519 1939 412 UUNET - Commercial IP service
24863 346 47 32 LINKdotNET AS number
3301 308 1455 288 TeliaNet Sweden
3320 304 4993 252 Deutsche Telekom AG
6746 278 128 254 Dynamic Network Technologies,
680 257 2044 250 DFN-IP service G-WiN
8220 248 459 239 COLT Telecommunications
3215 238 2254 95 France Telecom Transpac
8708 235 287 228 Romania Data Systems S.A.
3269 216 2647 74 TELECOM ITALIA
3246 209 340 199 Song Networks
8551 206 196 30 Bezeq International
3352 202 1783 37 Ibernet, Internet Access Netw
30890 201 17 93 SC Kappa Invexim SRL
9116 194 136 25 Goldenlines main autonomous s
1257 190 1180 168 SWIPnet Swedish IP Network
3300 184 171 90 AUCS Communications Services
12479 184 578 6 Uni2 Autonomous System
786 177 1795 177 The JANET IP Service
5089 174 1658 53 NTL Group Limited
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1234 1870 211 UniNet S.A. de C.V.
11830 483 299 19 Instituto Costarricense de El
11172 365 116 63 Servicios Alestra S.A de C.V
16814 361 22 8 NSS, S.A.
22047 318 238 12 VTR PUNTO NET S.A.
7303 288 143 29 Telecom Argentina Stet-France
6471 259 74 31 ENTEL CHILE S.A.
14117 243 17 14 Telefonica del Sur S.A.
11556 229 128 3 Cable-Wireless Panama
6147 221 166 25 Telefonica Del Peru
6503 215 172 86 AVANTEL, S.A.
20299 190 23 12 NEWCOM AMERICAS
10620 186 53 24 TVCABLE BOGOTA
10481 181 72 8 Prima S.A.
14522 167 27 8 SatNet S.A.
23216 157 19 42 RAMtelecom Telecomunicaciones
21826 155 27 59 INTERCABLE
7910 154 11 29 ANDINET ON LINE
19429 151 93 42 E.T.B.
19169 143 9 26 Telconet
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 283 867 224 The Internet Solution
8452 229 188 7 TEDATA
6713 143 135 11 Itissalat Al-MAGHRIB
2018 136 301 111 Tertiary Education Network
15475 129 84 4 Nile Online
5536 123 8 15 Internet Egypt Network
33783 119 8 9 EEPAD TISP TELECOM & INTERNET
24835 85 48 6 RAYA Telecom - Egypt
2905 77 174 73 The Internetworking Company o
2561 61 6 2 Egyptian Universities Network
15706 56 12 4 Sudatel Internet Exchange Aut
23889 49 16 13 MAURITIUS TELECOM
5713 44 294 34 Telkom SA Ltd
33774 42 13 23 AS Number for Telecom Algeria
16637 33 21 25 Johnnic e-Ventures
8524 30 2 6 AUCEGYPT Autonomous System
21280 29 4 4 Swift Global Kenya Ltd.Is an
33766 26 2 1 Nyala Communications Pty Ltd
33776 26 2 8 Starcomms Nigeria Limited
12455 25 6 3 Jambonet Autonomous system
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1214 1142 Videsh Sanchar Nigam Ltd. Aut
11492 1051 1028 Cable One
8151 1234 1023 UniNet S.A. de C.V.
9583 1033 1017 Sify Limited
4134 1281 1006 CHINANET-BACKBONE
18566 1006 997 Covad Communications
6478 1097 965 AT&T Worldnet Services
9498 980 908 BHARTI BT INTERNET LTD.
4323 1263 902 Time Warner Telecom
22773 713 670 Cox Communications, Inc.
17488 676 641 Hathway IP Over Cable Interne
5668 600 583 CenturyTel Internet Holdings,
19262 773 566 Verizon Global Networks
7545 628 548 TPG Internet Pty Ltd
6197 1036 533 BellSouth Network Solutions,
19916 568 517 OLM LLC
7029 587 508 Alltel Information Services,
18101 535 503 Reliance Infocom Ltd Internet
4668 508 498 LG-EDS Systems Inc.
15270 532 497 PaeTec.net -a division of Pae
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65019 PRIVATE 63.138.117.0/24 19034 Norcom Networks Corp
65332 PRIVATE 63.166.106.192/27 1803 SPRINT
65242 PRIVATE 64.222.142.0/24 13674 Bell Atlantic Global
64858 PRIVATE 84.36.180.0/24 20858 EgyNet
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
22895 UNALLOCATED 216.174.38.0/24 19094 Adelphia Business So
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
7.1.1.0/24 1239 Sprint
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
172.33.1.0/24 7018 AT&T WorldNet Services
192.0.10.0/24 9498 BHARTI BT INTERNET LTD.
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.153.136.0/21 721 DLA Systems Automation Center
192.172.0.0/19 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:9 /10:14 /11:34 /12:123
/13:237 /14:450 /15:868 /16:9382 /17:3858 /18:6380
/19:13470 /20:15389 /21:13900 /22:18028 /23:19291 /24:116725
/25:785 /26:828 /27:481 /28:60 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1088 1097 AT&T Worldnet Services
11492 1037 1051 Cable One
18566 988 1006 Covad Communications
9583 878 1033 Sify Limited
2386 831 1135 AT&T Data Communications Serv
7018 810 1502 AT&T WorldNet Services
6197 796 1036 BellSouth Network Solutions,
23577 764 778 Korea Telecom (ATM-MPLS)
7011 695 792 Citizens Utilities
9498 648 980 BHARTI BT INTERNET LTD.
8151 611 1234 UniNet S.A. de C.V.
4755 610 1214 Videsh Sanchar Nigam Ltd. Aut
4766 590 783 Korea Telecom (KIX)
19916 563 568 OLM LLC
4323 521 1263 Time Warner Telecom
15270 499 532 PaeTec.net -a division of Pae
4668 497 508 LG-EDS Systems Inc.
17488 497 676 Hathway IP Over Cable Interne
5668 465 600 CenturyTel Internet Holdings,
855 464 566 Canadian Research Network
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:8 7:1 8:73 9:1 12:1798 15:19
16:3 17:3 18:8 20:38 24:942 25:1
32:53 38:312 40:60 41:125 44:2 47:5
52:4 55:2 56:3 57:25 58:395 59:385
60:273 61:944 62:916 63:1968 64:3117 65:2362
66:3275 67:804 68:639 69:1824 70:513 71:104
72:1325 73:1 74:457 75:259 76:50 77:192
80:850 81:801 82:576 83:375 84:385 85:760
86:352 87:471 88:273 89:872 90:6 91:298
97:6 116:65 121:183 122:526 123:100 124:783
125:932 128:274 129:221 130:124 131:366 132:52
133:10 134:193 135:39 136:184 137:80 138:138
139:70 140:474 141:170 142:371 143:234 144:287
145:43 146:322 147:117 148:386 149:144 150:114
151:159 152:92 153:120 154:4 155:253 156:151
157:187 158:160 159:159 160:105 161:90 162:234
163:178 164:451 165:405 166:236 167:280 168:496
169:120 170:399 171:16 172:1 189:453 190:600
192:5764 193:3828 194:3118 195:2212 196:942 198:3745
199:3293 200:4778 201:1014 202:7275 203:7482 204:3955
205:2075 206:2359 207:2882 208:2682 209:3586 210:2451
211:954 212:1304 213:1461 214:409 215:40 216:3998
217:1148 218:357 219:360 220:945 221:381 222:262
End of report
